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US 12,448,913 B2Granted
Pre-chamber assembly
AssigneeInnio Jenbacher GmbH & Co OG
InventorsWolfgang Fimml, Rafal Pyszczek, Tobias Triendl, Nikolaus Spyra, Philipp Volgger
Life of this patent
Estimating the term…
Abstract
A pre-chamber assembly of an internal combustion engine includes a supply channel configured to supply air and fuel into a pre-chamber, at least one transfer passage configured to couple the pre-chamber with a main combustion chamber, and a riser passage between the pre-chamber and the transfer passage. The riser passage is oblique relative to a longitudinal axis of the pre-chamber assembly. An ignition means and the supply channel are arranged on a proximal end of the pre-chamber assembly.
Claims20
A system, comprising:
- a pre-chamber assembly for an internal combustion engine with a distal end, which protrudes into a main combustion chamber when the pre-chamber assembly is mounted in the internal combustion engine, and a proximal end, the pre-chamber assembly comprising:
- a supply channel fluidically connected with a pre-chamber, wherein the supply channel is configured to supply air, fuel, or an air-fuel-mixture to the pre-chamber, wherein the supply channel is disposed on the proximal end of the pre-chamber assembly;
- at least one transfer passage fluidically connecting the pre-chamber with the main combustion chamber when the pre-chamber assembly is mounted in the internal combustion engine;
- and
- a riser passage, wherein the riser passage fluidically connects the pre-chamber with the at last one transfer passage, wherein the riser passage is oblique with respect to a longitudinal axis of the pre-chamber assembly;
- an igniter configured to ignite an air-fuel-mixture in the pre-chamber, wherein the igniter is arranged on the proximal end of the pre-chamber assembly, wherein the igniter comprises a sealing area and a mounting portion disposed directly about a wall of the igniter, the sealing area is configured to seal the igniter to the pre-chamber assembly between the mounting portion and the pre-chamber, and the sealing area of the igniter is arranged between the mounting portion and an end portion of the igniter facing the pre-chamber.
3 more elements
A system, comprising:
- a pre-chamber assembly configured to couple to an internal combustion engine, wherein the pre-chamber assembly includes:
- a supply channel configured to supply air and/or fuel into a pre-chamber;
- an igniter receptacle configured to mount an igniter in fluid communication with the pre-chamber, wherein the igniter receptacle comprises a mounting portion and a sealing area configured to extend directly about a wall of the igniter, the mounting portion comprises threads, the sealing area is configured to seal the igniter to the pre-chamber assembly between the mounting portion and the pre-chamber, and the sealing area is disposed between the mounting portion and an end portion of the igniter facing the pre-chamber;
- at least one transfer passage configured to couple the pre-chamber with a main combustion chamber of the internal combustion engine;
- and
- a riser passage between the pre-chamber and the transfer passage, wherein the riser passage is oblique relative to a longitudinal axis of the pre-chamber assembly.
3 more elements
A method, comprising:
- supplying air and/or fuel into a pre-chamber via a supply passage of a pre-chamber assembly, wherein the pre-chamber assembly is configured to couple to an internal combustion engine, the pre-chamber assembly comprises at least one transfer passage configured to couple the pre-chamber with a main combustion chamber of the internal combustion engine, and the pre-chamber assembly comprises a riser passage between the pre-chamber and the transfer passage;
- sealing an igniter mounted within an igniter receptacle in fluid communication with the pre-chamber, wherein the igniter receptacle comprises a mounting portion and a sealing area configured to extend directly about a wall of the igniter, the mounting portion comprises threads, the sealing area seals the igniter to the pre-chamber assembly between the mounting portion and the pre-chamber, and the sealing area is disposed between the mounting portion and an end portion of the igniter facing the pre-chamber;
- and
- directing a backflow from the main combustion chamber through the rise passage into the pre-chamber, wherein the riser passage is oblique relative to a longitudinal axis of the pre-chamber assembly.
1 more element
Dependencies are inferred from the claim text.